The equation could be used to calculate the sum of the geometric series is 
<h3>Sum of geometric sequence</h3>
Geometric sequence are sequence that increase expoentially. The formula for calculating the sum of an exponential sequence is expressed as:

where
- a is the first term
- n is the number of terms
- r is the common ratio
From the given sequence
a= 1/3
r = 2/9 * 3 = 2/3
Substitute into the formula

Hence the equation could be used to calculate the sum of the geometric series is 
Learn more on geometric series here; brainly.com/question/24643676
Since a stick note i completely flat (paper) there isn't the 3rd dimension, height. So it cannot be measured with volume, but area. To find the area, multiple the leight by the width, to get the answer.
you mean : 5/8x + 1/16x = 5/16 +x
<=> 10/16x +1/16x = (5 +16x)/16
(16x # 0)
<=> 11/16x = x(5+16x)/(16x)
<=>11 = x(5+16x)
<=> 11 = 16x^2 + 5x
<=> x =-1 or x =11/16
Answer:
The equation would be 8h= 128
Step-by-step explanation: